A dishwasher.

摘要

The present invention discloses a sink mounted dishwasher having a closure mechanism (41, 140) in the drain (15) of the sink (2). A hydraulic control system (Fig. 6) for such a dishwasher is also disclosed together with a hydraulically operated liquid detergent dispenser (47, Fig 7). The preferred form of hyraulic fluid is liquid rinse aid. Two forms of spray arm (28, 128) are also disclosed, each with an structure (20) which enables the spray arm to be removably and rotatably mounted within the sink.